I have the Halti for my big guys and it has worked great! Matt didn't like his at first but made it exciting for him and now no problems. I couldn't not take a step when he was pulling as he out weights me and I needed something to aid with this. The halti has made a huge difference here. mybe try again

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Mom To
Matt and Murphy- Born March 18/08
English Mastiffs.
AHHHH They are a year old already!!!!